A very interesting article came out today:

“Hunting for topological dark matter with atomic clocks”

Scientists have an ingenious idea that they can detect dark matter due to its disruption of the fabric of space-time.

They might want to read Pomroy’s World as dark matter plays a big role.  I will make sure to pass on the GPS idea to Juan and Muriel (characters in Pomroy’s World) as it might help them get out of their current predicaments.